SOHO/LASCO Halo CME  20140910
COMMENTS:  Asymmetric HALO CME resulting from a X1.6 class X-ray flare of AR 12158 located [N14, E05].                   
                          LASCO velocity:  1425.3 km/sec at PA160 degrees.  Acceleration:  *****
                           SEP (Solar Energetic Particle) event.  Increased proton flux seen in the LASCO images.

Halo Alert: halo-message.20140910


Subject: SOHO/LASCO HALO CME 140910

UCMEO 93001 40910 2330/
40910 61800 82230 1601/ 159// 233// 41425
41024 61721 81748 10514 12158 1112/
99999

PLAIN

SOHO/LASCO observed an asymmetric HALO CME on September 10, 2014.  Event is first
seen in C2 at 18:00 UT as a bright HALO CME at first frame. The event continues
into the C3 field beginning 18:06 to 22:30 UT where it leaves the FOV at 30Rsun.
Increased proton flux is seen in the LASCO images.

Time/height measurements were marked at 3 positions:
160 degrees:
    C2: 2 points 1799.7 km/sec
    C3: 7 points 1380.3 km/sec
    AVG: 1425.3 km/sec Acceleration: *****
318 degrees:
    C2: 3 points 1340.8 km/sec
    C3: 12 points 1175.0 km/sec
    AVG: 1196.6 km/sec Acceleration -36.11 m/sec^2
335 degrees:
    C2: 2 points 1416.5 km/sec
    C3: 12 points 1193.5 km/sec
    AVG: 1209.0 km/sec Acceleration -29.13 m/sec^2


SDO/AIA 193A shows a flare with emission at location [N14, E05] from AR 12158 beginning
17:21-18:30 UT.  The CME produces a dimming and a wave spanning the disk.

STEREO: BEACON Data
COR2 A, n/a.
EUVI A, n/a.
COR2 B, 17:54-20:24 UT; shows an asymetric HALO CME.
Preliminary time/height measure gives 1218.6 km/sec velocity at LE.
EUVI B, 17:36-18:40 UT EUVI shows material along the limb at all positions in difference.

NOAA reports a LDE X1.6 class Xray flare 17:21/17:45/18:20 UT from AR 12158.

The observation of this event is considered 'GOOD'. This CME is determined a FRONTSIDED event.

Images and movies and time/height information for this event is available on the web at:

http://umbra.nascom.nasa.gov/lasco/observations/halo/2014/140910/

Best regards,

Kevin Schenk
Solar Heliospheric Observatory
EIT and LASCO Operations
NASA-Goddard Space Flight Center, USA

BT



SOHO/LASCO C2 Diff
 SOHO/LASCO C3 Diff
 SDO/AIA 193A
20140910_183605_c2rdiff.gif
 20140910_211805_c3rdiff.gif
 20140910_180306_aia_193.gif
STEREO/COR2 BEHIND
 SDO/AIA 193 Diff
 STEREO/COR2 AHEAD
20140910_192427_cor2_behind_rdiff.gif
 20140910_173609_aia_193_rdiff.gif
 cor2_no_data.gif
STEREO/EUVI BEHIND
 SDO/AIA 304A Diff
 SDO/AIA 304A
20140910_182057_euvi_195_behind_diff.gif
 20140910_173609_aia_304_rdiff.gif
 20140910_174810_aia_304.gif







SOHO/LASCO C2
20140910_1900_D2_combo.gif
SOHO/LASCO C3
20140910_2118_D3_combo.gif


Time/Height Velocities and Plots

C2/C3
20140910_c2c3c_ht.gif

Click on Links below for additional information.

MPEG Movies


LASCO Software IDL Save Files (.mvi)




  • Please, send questions and comments to Kevin Schenk